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Asymmetry of the Balmer-alpha line shape and recovery of the effective hydrogen temperature in the tokamak scrape-off layer

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Abstract

An algorithm for recovering the effective temperature of atoms of hydrogen (and its isotopes) in the tokamak scrape-off layer from the asymmetry of the Balmer-alpha line shape is proposed. The algorithm is based on the parametrization of the asymmetry of the line shape caused by the nonlocal character of neutral hydrogen flux from the wall into the tokamak plasma. The accuracy of the algorithm is tested against the results of simulations of the velocity distribution function of deuterium neutrals in the scrape-off layer by the EIRENE code with the use of the source data on the main plasma component in the quasi-stationary stage of the inductive mode of ITER operation calculated by the SOLPS4.3 (B2-EIRENE) code.

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Authors and Affiliations

  1. National Research Centre Kurchatov Institute, pl. Kurchatova 1, Moscow, 123182, Russia

    V. S. Neverov, A. B. Kukushkin & A. G. Alekseev

  2. National Research Nuclear University MEPhI, Kashirskoe sh. 31, Moscow, 115409, Russia

    A. B. Kukushkin

  3. ITER Organization, Route de Vinon sur Verdon, F-13115, St Paul Lez Durance, France

    S. W. Lisgo & A. S. Kukushkin

Authors
  1. V. S. Neverov
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  2. A. B. Kukushkin
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  3. S. W. Lisgo
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  4. A. S. Kukushkin
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  5. A. G. Alekseev
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Corresponding author

Correspondence to V. S. Neverov.

Additional information

Original Russian Text © ITER Organization, Route de Vinon sur Verdon, F-13115 St Paul Lez Durance, France, 2015, published in Fizika Plazmy, 2015, Vol. 41, No. 2, pp. 115–124.

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Neverov, V.S., Kukushkin, A.B., Lisgo, S.W. et al. Asymmetry of the Balmer-alpha line shape and recovery of the effective hydrogen temperature in the tokamak scrape-off layer. Plasma Phys. Rep. 41, 103–111 (2015). https://doi.org/10.1134/S1063780X15020075

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  • DOI: https://doi.org/10.1134/S1063780X15020075

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